Date: Sun, 10 Dec 1995 19:37:50 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: frederic@parc.xerox.com (Ron Frederick) Cc: multimedia@star-gate.com, hackers@freebsd.org Subject: Re: nv and cuseeme mode Message-ID: <199512101837.TAA03070@labinfo.iet.unipi.it> In-Reply-To: <95Dec10.100553pst.16136@ecco.parc.xerox.com> from "Ron Frederick" at Dec 10, 95 10:05:19 am
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> As far as I have been told, CUSeeMe is only capable of coping with sizes > 160x120 and 320x240. This isn't something I have control over in nv. The only > way to make it work with PAL inputs, or other inputs that do not match one of > its supported sizes, is to actually take the incoming image and crop or > rescale it to one of the supported sizes before it is encoded. > > No patch or workaround to this problem is available at this time. Right. What I did was to modify the "meteor_grab.c" sources to always return a NTSC geometry. Cropping within nv is probably more portable. BTW, is CUSeeme black&white only ? > > * the incoming packet type in CUSeeMe_Decode is seen as 256 instead of > > 1. Swapping the bytes makes the rest of the code be called, but > > evidently there are other parts of the code where endiannes is > > important. > > > This is a known bug. There's also another endian bug in the decode routine > which causes it to display a distorted image, with alternating pixels swapped. > Patches for both of these are below: Thanks for the patches. One comment, the large tables used in the code *might* be initialized at run time depending on the endiannes of the system. Probably easier to maintain. Satoshi, could you please update the port of nv with the patches from Ron ? Luigi ==================================================================== Luigi Rizzo Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it Universita' di Pisa tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 http://www.iet.unipi.it/~luigi/ ====================================================================
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